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[PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor

Started byBen Hutchings <ben@decadent.org.uk>
First post2017-03-10 14:50 +0100
Last post2017-03-13 04:40 +0100
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  [PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to  hide out of bounds HW cursor Ben Hutchings <ben@decadent.org.uk> - 2017-03-10 14:50 +0100
    Re: [PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to  hide out of bounds HW cursor Michel Dänzer <michel@daenzer.net> - 2017-03-13 04:40 +0100

#1597675 — [PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor

FromBen Hutchings <ben@decadent.org.uk>
Date2017-03-10 14:50 +0100
Subject[PATCH 3.16 302/370] drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor
Message-ID<tjt5G-4JP-75@gated-at.bofh.it>
3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Michel Dänzer <michel.daenzer@amd.com>

commit d74c67dd7800fc7aae381f272875c337f268806c upstream.

The crtc_h/vdisplay fields may not match the CRTC viewport dimensions
with special modes such as interlaced ones.

Fixes the HW cursor disappearing in the bottom half of the screen with
interlaced modes.

Fixes: 6b16cf7785a4 ("drm/radeon: Hide the HW cursor while it's out of bounds")
Reported-by: Ashutosh Kumar <ashutosh.kumar@amd.com>
Tested-by: Sonny Jiang <sonny.jiang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
 drivers/gpu/drm/radeon/radeon_cursor.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/radeon_cursor.c
+++ b/drivers/gpu/drm/radeon/radeon_cursor.c
@@ -282,8 +282,8 @@ int radeon_crtc_cursor_move(struct drm_c
 	}
 
 	if (x <= (crtc->x - w) || y <= (crtc->y - radeon_crtc->cursor_height) ||
-	    x >= (crtc->x + crtc->mode.crtc_hdisplay) ||
-	    y >= (crtc->y + crtc->mode.crtc_vdisplay))
+	    x >= (crtc->x + crtc->mode.hdisplay) ||
+	    y >= (crtc->y + crtc->mode.vdisplay))
 		goto out_of_bounds;
 
 	x += xorigin;

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#1598839

FromMichel Dänzer <michel@daenzer.net>
Date2017-03-13 04:40 +0100
Message-ID<tkoZX-2Li-1@gated-at.bofh.it>
In reply to#1597675
On 10/03/17 08:46 PM, Ben Hutchings wrote:
> 3.16.42-rc1 review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Michel Dänzer <michel.daenzer@amd.com>
> 
> commit d74c67dd7800fc7aae381f272875c337f268806c upstream.
> 
> The crtc_h/vdisplay fields may not match the CRTC viewport dimensions
> with special modes such as interlaced ones.
> 
> Fixes the HW cursor disappearing in the bottom half of the screen with
> interlaced modes.
> 
> Fixes: 6b16cf7785a4 ("drm/radeon: Hide the HW cursor while it's out of bounds")

It might make sense to squash together the backports of this commit and
6b16cf7785a4, or at least move them closer together in the series, to
prevent people from hitting the regressed state.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer

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